Ed said:
I doubt it, it should boot up and beep or even get as far as displaying
a message on the screen about a bad CPU and then just sit there with
fans and HDDs spinning.
Check the power switch on the case and it's connections again, you can
short the PWR pins on the mobo for a second to simulate an ATX power
switch.
Only thing I rem having to do on the K7M was having to change the
Chassis Intrusion jumper from it's default and the CPU was a bitch to
get into the slot! ;p
Ed
To start, the board needs +5VSB from the power supply. It also needs
a power switch plugged into the PANEL connector. When the case front
panel power switch is pressed, a logic chip on the board powered
by the +5VSB, is used to create the PS_ON# signal to the power supply.
This causes the rest of the supply rails (+3.3,+5,+12,-5,-12) to come
on and the PS fan to turn.
The power supply has the following states:
+5VSB Other_rails
Switch on back of case set to "0" Off Off
Switch on back of case set to "1" On Off
Press the case front panel switch On On
Note that in the third case, the pressing of the front panel switch
is momentary - the logic on the motherboard latches the signal, so
that the power will stay on. It stays on as long as the motherboard
keeps the PS_ON# signal to the power supply in the low state.
So, something is preventing that sequence from taking place. Your
motherboard doesn't have the green LED that most modern motherboards
have for monitoring the presence of +5VSB (standby voltage). To find
out whether the power supply is making an adequate +5VSB, you'll
need a multimeter and a place to connect it. The Wake On LAN
connector (WOL) has three pins, two of them are +5VSB and GND. That
would give you a place to check with your multimeter to make sure
the motherboard is getting +5VSB.
If the +5VSB is being shorted, then the board cannot be started
until that is fixed. Most power supplies have this current limited
to an amp or so, so it wouldn't take much to stop it.
Other than that, did you go through the manual and make sure all the
jumpers have sane settings ? For example, the Vcore jumpers have to be
set to "CPU Default" or to some voltage value, for the processor to
start. There should be a fresh CMOS battery in the battery holder -
you can buy these from Radio Shack.
Also check that the brass standoffs underneath the motherboard are
only installed where there are holes in the motherboard for the
screws. Adding an extra brass standoff can contact copper traces
on the bottom of the board, shorting stuff out.
HTH,
Paul
